OBD can't connect, 2001 TT
#1
OBD can't connect, 2001 TT
Hello,
I have a 2001 Audi TT Quattro. For some reason the OBD reader cannot connect to the car, so no pass on emission test
Here's some information and stuff I tried:
- the car has the original BOSE radio working, and station info is displayed on the dashboard
- engine check light is not on, and I can run the diagnostics from the dashboard, which prints OK at the end
- I checked all the fuses on the side panel
- I cleaned the OBD connector with contact cleaner
- tried 3 different OBD readers (emission test computer, handheld OBD reader at shop, and I have a simple OBD reader), they all error out
- I checked the K-line voltage between pins 4+7, reads 0.18 volts
- I do not have a VAG-COM
- the car was not driven for over a year (due to new babies in the house), the battery was dead so I replaced it
What else can I do to diagnose/fix this problem? I've seen some posts suggesting cleaning radio/HVAC connections.
A mechanic suggested that some cars need to go through certain number of startup/warmup cycles before the OBD works, not sure if that applies.
Should I get a VAG-COM?
Thanks so much,
-lajos
I have a 2001 Audi TT Quattro. For some reason the OBD reader cannot connect to the car, so no pass on emission test
Here's some information and stuff I tried:
- the car has the original BOSE radio working, and station info is displayed on the dashboard
- engine check light is not on, and I can run the diagnostics from the dashboard, which prints OK at the end
- I checked all the fuses on the side panel
- I cleaned the OBD connector with contact cleaner
- tried 3 different OBD readers (emission test computer, handheld OBD reader at shop, and I have a simple OBD reader), they all error out
- I checked the K-line voltage between pins 4+7, reads 0.18 volts
- I do not have a VAG-COM
- the car was not driven for over a year (due to new babies in the house), the battery was dead so I replaced it
What else can I do to diagnose/fix this problem? I've seen some posts suggesting cleaning radio/HVAC connections.
A mechanic suggested that some cars need to go through certain number of startup/warmup cycles before the OBD works, not sure if that applies.
Should I get a VAG-COM?
Thanks so much,
-lajos
#5
i found problem maybe your problem is same, too..
i had a superchips on my car and i cannot connect to car with superchips..
now i changed my eprom and put different one, now i can connect in a second
im sooo happy... do u have something like this on car ?
i had a superchips on my car and i cannot connect to car with superchips..
now i changed my eprom and put different one, now i can connect in a second
im sooo happy... do u have something like this on car ?
#6
Well, I'm not the first owner of the car, so it's possibility. Although this car has passed inspection since I got it (they need to connect to obd for smog), so I'm afraid I have a different issue.
But I'll check for superchip. Thanks for the tip!
But I'll check for superchip. Thanks for the tip!
#10
Old thread, but looking for help.
Wife's 2002 TT dies on road, and will crank, won't fire. I get there 20-30 minutes later, everything checks out, no obvious defects, she cranks it starts right away. we're three miles from home, drives home, and it dies on our lane. I grab my OBD tool, won't connect. about 20-30 minutes go by, and it connects, shows a P0322 code, and starts and we drive it to the house, I backed it into the garage and pull it onto a set of ramps.
Any idea if this is common? There is a relay that feeds the ECM, can it cause this issue. I am an old Cat mechanic, I have a preconceived notion that the power supply being cut to the ECM can throw an errant code, particularly speed/timing sensors.
Wife's 2002 TT dies on road, and will crank, won't fire. I get there 20-30 minutes later, everything checks out, no obvious defects, she cranks it starts right away. we're three miles from home, drives home, and it dies on our lane. I grab my OBD tool, won't connect. about 20-30 minutes go by, and it connects, shows a P0322 code, and starts and we drive it to the house, I backed it into the garage and pull it onto a set of ramps.
Any idea if this is common? There is a relay that feeds the ECM, can it cause this issue. I am an old Cat mechanic, I have a preconceived notion that the power supply being cut to the ECM can throw an errant code, particularly speed/timing sensors.
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